This device is a robotic probe used as part of the Argo program for oceanography. While in transit we drop the probes into the ocean where they sink to the bottom and resurface after 10-days. Upon breaking the surface the top antenna transmits conductivity, salinity and temperature data along with GPS location to a satellite that logs the data. All data logged through the program is free and assessable online. The device will continue to sink and resurface for up to five years before the batteries fail and the device is laid to rest at the bottom of the ocean.